712326ecbd
but the registers actually begin at 0x3f2, and this is what PNPBIOS reports for the floppy controller resources. Adjust the register offsets and the mapping of them for the ISA front-end to compensate, so that the PNPBIOS attachment of the floppy controller actually works.
246 lines
7.4 KiB
C
246 lines
7.4 KiB
C
/* $NetBSD: fdc_isa.c,v 1.2 2000/05/02 03:33:45 thorpej Exp $ */
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/*-
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* Copyright (c) 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Charles M. Hannum.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*-
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Don Ahn.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)fd.c 7.4 (Berkeley) 5/25/91
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*/
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#include "rnd.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/callout.h>
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#include <sys/device.h>
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#include <sys/buf.h>
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#include <sys/queue.h>
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#if NRND > 0
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#include <sys/rnd.h>
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#endif
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#include <machine/bus.h>
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#include <machine/intr.h>
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#include <dev/isa/isavar.h>
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#include <dev/isa/isadmavar.h>
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#include <dev/isa/fdreg.h>
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#include <dev/isa/fdcvar.h>
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int fdc_isa_probe(struct device *, struct cfdata *, void *);
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void fdc_isa_attach(struct device *, struct device *, void *);
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struct fdc_isa_softc {
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struct fdc_softc sc_fdc; /* base fdc device */
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bus_space_handle_t sc_baseioh; /* base I/O handle */
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};
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struct cfattach fdc_isa_ca = {
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sizeof(struct fdc_isa_softc), fdc_isa_probe, fdc_isa_attach
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};
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#ifdef NEWCONFIG
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void fdc_isa_forceintr(void *);
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#endif
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int
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fdc_isa_probe(struct device *parent,
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struct cfdata *match,
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void *aux)
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{
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struct isa_attach_args *ia = aux;
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bus_space_tag_t iot;
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bus_space_handle_t ioh, ctl_ioh, base_ioh;
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int rv;
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iot = ia->ia_iot;
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rv = 0;
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/* Disallow wildcarded I/O addresses. */
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if (ia->ia_iobase == IOBASEUNK)
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return (0);
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/* Map the I/O space. */
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if (bus_space_map(iot, ia->ia_iobase, 6 /* FDC_NPORT */, 0, &base_ioh))
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return (0);
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if (bus_space_subregion(iot, base_ioh, 2, 4, &ioh)) {
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bus_space_unmap(iot, base_ioh, 6);
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return (0);
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}
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if (bus_space_map(iot, ia->ia_iobase + fdctl + 2, 1, 0, &ctl_ioh)) {
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bus_space_unmap(iot, base_ioh, 6);
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return (0);
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}
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/* Not needed for the rest of the probe. */
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bus_space_unmap(iot, ctl_ioh, 1);
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/* reset */
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bus_space_write_1(iot, ioh, fdout, 0);
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delay(100);
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bus_space_write_1(iot, ioh, fdout, FDO_FRST);
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/* see if it can handle a command */
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if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0)
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goto out;
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out_fdc(iot, ioh, 0xdf);
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out_fdc(iot, ioh, 2);
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#ifdef NEWCONFIG
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if (ia->ia_iobase = IOBASEUNK || ia->ia_drq == DRQUNK)
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return (0);
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if (ia->ia_irq == IRQUNK) {
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ia->ia_irq = isa_discoverintr(fdc_isa_forceintr, aux);
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if (ia->ia_irq == IRQNONE)
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goto out;
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/* reset it again */
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bus_space_write_1(iot, ioh, fdout, 0);
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delay(100);
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bus_space_write_1(iot, ioh, fdout, FDO_FRST);
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}
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#endif
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rv = 1;
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ia->ia_iosize = FDC_NPORT;
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ia->ia_msize = 0;
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out:
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bus_space_unmap(iot, base_ioh, 6 /* FDC_NPORT */);
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return (rv);
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}
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#ifdef NEWCONFIG
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/*
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* XXX This is broken, and needs fixing. In general, the interface needs
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* XXX to change.
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*/
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void
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fdc_isa_forceintr(void *aux)
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{
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struct isa_attach_args *ia = aux;
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int iobase = ia->ia_iobase;
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/*
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* The motor is off; this should generate an error with or
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* without a disk drive present.
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*/
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out_fdc(iot, ioh, NE7CMD_SEEK);
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out_fdc(iot, ioh, 0);
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out_fdc(iot, ioh, 0);
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}
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#endif
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void
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fdc_isa_attach(struct device *parent,
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struct device *self,
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void *aux)
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{
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struct fdc_softc *fdc = (void *) self;
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struct fdc_isa_softc *isc = (void *) self;
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struct isa_attach_args *ia = aux;
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printf("\n");
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fdc->sc_iot = ia->ia_iot;
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fdc->sc_ic = ia->ia_ic;
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fdc->sc_drq = ia->ia_drq;
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if (bus_space_map(fdc->sc_iot, ia->ia_iobase, 6 /* FDC_NPORT */, 0,
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&isc->sc_baseioh)) {
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printf("%s: unable to map I/O space\n", fdc->sc_dev.dv_xname);
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return;
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}
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if (bus_space_subregion(fdc->sc_iot, isc->sc_baseioh, 2, 4,
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&fdc->sc_ioh)) {
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printf("%s: unable to subregion I/O space\n",
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fdc->sc_dev.dv_xname);
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return;
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}
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if (bus_space_map(fdc->sc_iot, ia->ia_iobase + fdctl + 2, 1, 0,
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&fdc->sc_fdctlioh)) {
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printf("%s: unable to map CTL I/O space\n",
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fdc->sc_dev.dv_xname);
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return;
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}
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fdc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE,
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IPL_BIO, fdcintr, fdc);
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fdcattach(fdc);
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}
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